178 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



vein 11 arising from the di.scal cell. Hind wings with vein S joined 

 to the subcostal b}" an oblique bar at the end of cell, the bar partl}^ 

 obsolete above. 



Type. — Oosiiiis tropicalis Schaus." 



Genus RAVIGIA, new genus. 



Antennae of male shortly bipectinate to the tip. Head moderate; 

 palpi slender, just exceeding the front. Fore wings with veins 7, 8, 9 

 stalked; accessory cell present, with vein 11 arising from it. Hind 

 wings with vein 8 joined to the subcostal by an erect bar at the end of 

 the cell, veins 6 and 7 separate at origin and subparallel at base; 

 frenulum well developed. 



Type. — Givira jx'lyh ioides Schaus. * 



Genus ACOSSUS, new genus. 



Antennae of male bipectinate to tip; palpi upturned to near middle 

 of frons. Sexes similar, the wings broad. Hind wings with veins 

 6 and 7 from a point or stalked, vein 8 joined to the subcostal by an 

 oblique bar near end of cell. Fore wings with veins 7, 8, 9 stalked; 

 accessory cell present, vein 11 from the discal cell. 



Type. — Cossus 'undosus Lintner.'' 



Genus LENTAGENA, new genus. 



Antennas of male shortly bipectinate; palpi minute. Wings narrow. 

 Fore wings with veins 7 and 8 stalked; no accessory cell. Hind wings 

 with vein 8 free. 



Type. — JEugivira imdarui Schaus.'^ 



Genus TRIGENA, new genus. 



Antennre of male broadly bipectinate; palpi minute. Wings rather 

 narrow. Fore wings with veins 8 and 9 stalked; no accessor}^ cell. 

 Hind wings with vein 8 free. 



Type. — Cassus parilis Schaus.*^ 



Family PSYCHID^E. 

 Genus BIOPSYCHE, new genus. 



Differs from Thanatojysyche Butler in the presence of the branch of 

 vein 1 on fore wings, which is much as in Thyridopteryx. Wings 

 elongate, narrow; fore wings with veins 1, 5 stalked. 



Typ)e. — Thanatopsyche apicalis Hampson.-^' 



« Trans. Am. Ent. Soc, XXX, 1904, p. 142. 

 6 Journ. N. Y. Ent. Soc, IX, 1901, p. 48. 

 cRep. N. Y. State Mus., XXX, 1878, p. 243. 

 «^ Journ. N. Y. Ent. Soc, IX, 1901, p. 75. 

 ''Proc Zool. Soc. Lond., 1892, p. 327. 

 /Ann. Mag. Nat. Hist. (7), XIV, 1904, p. 180. 



